"end-feet" meaning in English

{
  "head_templates": [
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      "args": {
        "1": "p"
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      "expansion": "end-feet pl (plural only)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "langcode": "en",
          "name": "Anatomy",
          "orig": "en:Anatomy",
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            "Biology",
            "Medicine",
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            "Fundamental"
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      "glosses": [
        "Button-like terminals of axons that make synaptic connections with other nerve-cells."
      ],
      "id": "en-end-feet-en-noun-AQx0wBp7",
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "terminal",
          "terminal"
        ],
        [
          "axon",
          "axon"
        ],
        [
          "synaptic",
          "synaptic"
        ]
      ],
      "raw_glosses": [
        "(anatomy) Button-like terminals of axons that make synaptic connections with other nerve-cells."
      ],
      "synonyms": [
        {
          "word": "axon terminals"
        },
        {
          "word": "endfeet"
        }
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "end-feet"
}

{
  "head_templates": [
    {
      "args": {
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      "expansion": "end-feet pl (plural only)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
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      "glosses": [
        "Button-like terminals of axons that make synaptic connections with other nerve-cells."
      ],
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "terminal",
          "terminal"
        ],
        [
          "axon",
          "axon"
        ],
        [
          "synaptic",
          "synaptic"
        ]
      ],
      "raw_glosses": [
        "(anatomy) Button-like terminals of axons that make synaptic connections with other nerve-cells."
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "axon terminals"
    },
    {
      "word": "endfeet"
    }
  ],
  "word": "end-feet"
}